| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell cogeneration system, capable of stably supplying hot water at a high temperature in a short time and readily coping with fluctuation in the thermal output of the fuel cell. SOLUTION: This fuel cell cogeneration system is equipped with a fuel gas generation part 1 for generating hydrogen rich fuel gas by steam reforming, a fuel cell 2 for generation electricity with the use of the fuel gas and oxidizer gas, a fuel gas humidifier 3 and an oxidizer gas humidifier 4 for humidifying the fuel gas and the oxidizer gas, an inverter 5 for inverting direct current electricity to alternating current electricity, a cooling water circulating pump 6, a cooling water circulating passage 7 and a passage interchanging valve 9 for circulating the cooling water, a heat exchanger 21 for cooling the cooling water by heat exchange with stored hot water, a stored hot water circulating passage 22 for circulating the stored hot water, a storage hot water tank 8 for storing the stored hot water, and a radiator 11 for cooling the cooling water by heat radiation. The stored hot water is returned to the storage hot water tank 8 through a stored hot water circulating passage exhaust port 23 provided in the middle part of the storage hot water tank 8. |
